Question about Sony STR-DE625

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Surround sound distortion

Hello. I have a Sony STR-K740P hooked to surround sound. I recently noticed that the sound is distorted in two of the rear speakers. It doesn't happen all the time, only on certain channels - those airing surround I suppose. I keep the speaker setting in "NORM.SURR." mode, as this seems to have generated the best output in the past. Do receivers commonly go out? Can it be cleaned for better performance? Any suggestions or advice would be appreciated. 

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  • mwg52 Dec 18, 2008

    Mine is Yamaha amplifier home theatre system. only 2 of the fron speakers and the centre one distorts. you hear a humming sound.it only happens when i am watching a movie

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Larry Stiles
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Receivers like this will incorrectly decode rear channel audio and pass it on to the rear channels as distorted audio. Make sure the source being used really has rear channel information encoded into it. It could have other issues but check this first.

Posted on Jul 15, 2009

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I have a Sony STR-DE605 and all of the right side channels are distorted and have to be turned up 1/4 before you can hear any ot the distortion but if i turn if off switch to the left sounds perfect.Center...
Sorry for a dump question ,
have you changed the distorted Right speakers to LEFT to verify if speaker is OK ?
First try with just STEREO ,not on Surround and please contact me for further solution possibility..
Take care..

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Here you go buddy:
http://www.docs.sony.com/release/STRDE685.pdf

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The rear speaker decoding has to be enabled for them to function, regardless of the media. Enter the speaker setup menu and choose "yes" for the rear surround speaker decoding.

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I had this problem last night.

To solve it, you can reset the amp by:

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Good luck

Dr Gardner

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Try another DVD or Blu-Ray disc and see if it still distorts. If it does then it may be a setting in the player or in the receiver.

Cheers

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Why is it intermittently losing channels...front speakers and or rear surround?

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